USPS Barcode and Labeling Issues 2 — Questions and Answers
Question 1: A package label shows the ZIP+4 code as '10001-0000'. What potential issue does this indicate?
- Valid ZIP+4 with no delivery point error
- The +4 extension '0000' is not assigned and may cause misrouting (Correct answer)
- The base ZIP code is invalid
- ZIP+4 codes with zeros are reserved for PO Boxes only
Correct answer: The +4 extension '0000' is not assigned and may cause misrouting
A +4 extension of '0000' is generally unassigned and can cause automated sorting failures or misdelivery.
Question 2: When scanning an Intelligent Mail Barcode (IMb), the scanner reads fewer bars than expected. What is the most likely cause?
- The barcode was printed at too high a resolution
- Ink smearing or voids have obscured individual bars (Correct answer)
- The mail piece is traveling too slowly on the conveyor
- The IMb contains too many routing digits
Correct answer: Ink smearing or voids have obscured individual bars
Ink smearing or voids physically obscure bars, reducing the scanner's ability to read the full barcode sequence.
Question 3: A flat-size mail piece has a barcode that clears zone requirements but the barcode is printed vertically along the short edge. What is the problem?
- Vertical barcodes are acceptable on flats
- USPS requires barcodes to be oriented horizontally on flat-size pieces (Correct answer)
- The barcode should be on the back of the piece
- Flats require two barcodes for proper routing
Correct answer: USPS requires barcodes to be oriented horizontally on flat-size pieces
USPS DMM standards require that barcodes on flat-size mail pieces be printed horizontally to allow optical scanners to read them correctly.
Question 4: An address label reads 'Jane Smith, 400 Oak St, Apt 2B, Denver CO 80203'. The barcode encodes only '400 Oak St Denver CO 80203'. What is wrong?
- The barcode is correct; apartment numbers are optional in barcodes
- The barcode omits the apartment number, which may cause misdelivery within a multi-unit building (Correct answer)
- The name field should be encoded in the barcode
- Denver is an invalid city for ZIP 80203
Correct answer: The barcode omits the apartment number, which may cause misdelivery within a multi-unit building
Omitting the apartment or suite number from the barcode can cause the mail to be delivered to the wrong unit in a multi-unit building.
Question 5: A mailer uses a font that is 7 points in size for the delivery address on a letter. Why could this be a problem for USPS processing?
- USPS requires a minimum 8-point font for OCR-readable addresses (Correct answer)
- Font size does not affect mail processing at all
- Only sans-serif fonts are permitted on USPS mail
- The address must be printed in 12-point font minimum
Correct answer: USPS requires a minimum 8-point font for OCR-readable addresses
USPS requires delivery addresses to be printed in at least 8-point font so OCR equipment can accurately read and process them.
Question 6: A Priority Mail label is printed with a barcode that has correct data but the bars are only 0.04 inches tall. What is the issue?
- Bar height is irrelevant as long as the width is correct
- The bars are below the minimum height requirement, making them unreadable by USPS scanners (Correct answer)
- Only Express Mail barcodes have height requirements
- The barcode should use a 2D format instead
Correct answer: The bars are below the minimum height requirement, making them unreadable by USPS scanners
USPS specifies minimum bar heights (typically 0.125 inches for IMb) to ensure laser scanners can reliably detect and read each bar.
Question 7: A shipper notices the tracking barcode on a package reads the same number as a package shipped two weeks ago. What serious error has occurred?
- Duplicate tracking numbers are allowed if shipped on different days
- A tracking number has been reused before its retirement period, causing tracking conflicts (Correct answer)
- The system automatically resolves duplicate numbers
- Only Priority Express labels cannot be reused
Correct answer: A tracking number has been reused before its retirement period, causing tracking conflicts
USPS tracking numbers must not be reused until after their designated retirement period to prevent tracking data conflicts and delivery errors.
USPS Barcode and Labeling Issues 2
A package label shows the ZIP+4 code as '10001-0000'.
What potential issue does this indicate?